gammaImage

Gamma-corrects an image. The same image viewed on different devices will
have perceptual differences in the way the image's intensities are
represented on the screen. Specify individual gamma levels for the red,
green, and blue channels, or adjust all three with the gamma parameter.
Values typically range from 0.8 to 2.3.

Gamma-corrects an image. The same image viewed on different devices will
have perceptual differences in the way the image's intensities are
represented on the screen. Specify individual gamma levels for the red,
green, and blue channels, or adjust all three with the gamma parameter.
Values typically range from 0.8 to 2.3.

Parameters

gamma

float

The amount of gamma-correction.

channel

int

Provide any channel constant that is valid for your channel mode. To
apply to more than one channel, combine channeltype constants using
bitwise operators. Refer to this
list of channel constants.